package backend.Java_Demo.wen.method;

//递归调用
public class Demo06 {
    public static void main(String[] args) {
        System.out.println(f(31));
    }
    public static int f(int n){

        if(n==1){
            return 1;
        }else {
            return n*f(n-1);
        }
    }
}
